Tough 1/8 Plusgreen
Adds partial green to balance with fluorescents.
Tough 3/4 Minusgreen
Reduces green output from fluorescent and other discharge sources. Equivalent to CC22.5 Magenta.
Tough Minusgreen
Converts cool white fluorescents to daylight.
Tough MT 54
A straw correction for white flame arcs and HMI. Deep-dyed base.
Tough MT2
Used in combination with Y-1 for correcting 5500K white flame arcs and HMI to 3200K. Also used as an amber
Tough MTY
A single filter combining MT2 and Y-1 for correcting 5500K white flame arcs and HMI to 3200K. Deep-dyed base.
Tough Plusgreen / Windowgreen
Adds green to natural and artificial daylight sources to balance with U.S. Cool White or Daylight type fluorescents. To be
Tough Y-1
A pale straw filter standard in U.S. for use on HMI or white flame arcs to absorb UV and reduce